System Specifications

DIFFERENTIAL FLUID TYPE

FRONT AXLE (FOUR-WHEEL DRIVE)
SAE 80W-90 Axle Lubricant (GM Part No. U.S. 1052271, in Canada 10950849).

FRONT AXLE (ALL-WHEEL DRIVE)
SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 12378261, in Canada 10953455) meeting GM Specification 9986115.

REAR AXLE
SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 12378261, in Canada 10953455) meeting GM Specification 9986115.

REAR AXLE (STEERABLE)
Synthetic Axle Lubricant; use only GM Part No. U.S. 12378557, in Canada 88901362. Do not add friction modifier.